Ground test method for full-aircraft electromagnetic compatibility of commercial aircraft

Abstract

The invention discloses a ground test method for full-aircraft electromagnetic compatibility of a commercial aircraft. The ground test method comprises the following steps: 1, determining the ground test content of the full-aircraft electromagnetic compatibility of the commercial aircraft; 2, specifying reference paper of the ground test basis of the full-aircraft electromagnetic compatibility of the commercial aircraft; 3, classifying regional electromagnetic environments installed in onboard electronic and electrical equipment; 4, determining a limiting value of electromagnetic compatibility test data, the conducted emission acceptability limit of a cable and the radiated emission electric field intensity acceptability limit of each space; 5, determining and researching an electromagnetic compatibility test system; 6, acquiring a curve that the electric field intensities of electromagnetic environments of a test field are changed along with frequencies; 7, performing conducted emission measurement; 8, performing radiated emission measurement; and 9, performing front door coupling interference measurement. According to the ground test method for the full-aircraft electromagnetic compatibility of the commercial aircraft disclosed by the invention, the problems of aircraft electromagnetic environment classification and test part selection, full-aircraft electromagnetic interference test data criterion setting and quantitative test can be solved. The ground test method for the full-aircraft electromagnetic compatibility of the commercial aircraft is applied to analyze and determine whether a commercial aircraft developed machine meets the electromagnetic compatibility requirement and the airworthiness conformity requirement.

Description

technical field [0001] The invention relates to a test method in the technical field of aircraft test, in particular to a ground test method for electromagnetic compatibility of a commercial aircraft. Background technique [0002] For the aerospace industry, with the development of electronic equipment towards diversification, miniaturization, integration and high speed, a large number of electronic equipment with different functions are installed inside the aircraft system, and the working frequency bandwidth is wide, dense or even overlapping. Compatibility issues are becoming more and more complicated. Even if all equipment meets the corresponding equipment-level electromagnetic compatibility control requirements, due to factors such as changes in the electromagnetic environment where they are installed, differences in cable types or lengths used in the system, and changes in equipment interface status, etc. It may lead to electromagnetic incompatibility of some critical ...

AI Technical Summary

Problems solved by technology

In China, there are few researches on the EMC test methods, test systems, and test standards of commercial aircraft, especially the EMC airworthiness compliance certification test of the entire aircraft is in its infancy.

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